The 'Cisco KnowledgeBase' section is one of the newest and most popular section on Firewall.cx. Dedicated to Cisco's leading technological inovations, this section offers articles covering multiple categories such Cisco Routers, Switches, Voice over IP and much more.

All articles are written by qualified engineers with years of experience and are complimented by our unique diagrams.

The quality of provided information is so high, readers can use it as a guideline for learning Cisco Technologies, but also for self-study exams.

The Protocols section deals with various network protocols found in today's networks. The aim of this section is to help understand the fundamentals of network protocols, how they work, where they are used and in which way they all work together to provide reliability and functionality for our applications, services and users.

Protocols such as TCP, IP, ICMP others are analysed in greater depth and therefore a dedicated sub-section has been provided, while other protocols are analysed on a single article with compromising its quality.